- Nam nemo haeres viventis – For no one is an heir of a living person.
- Naturae vis maxima est – The force of nature is the greatest.
- Necessitas non habet legem – Necessity has no law.
- Necessitas publica est major quam privata – Public necessity is greater than private necessity.
- Nemo admittendus est inhabilitare se ipsum – No one is allowed to incapacitate himself.
- Nemo bis punitur pro eodem delicto – No one can be twice punished for the same offence.
- Nemo contra factum suum venire potest – No man can contradict his own deed.
- Nemo dat quod non habet – No one can give what he does not have.
- Nemo Debet Bis Vexari Pro Una Et Eadem Causa – A man shall not be vexed twice for one and the same cause.
- Nemo debet esse judex in propria causa – No one can be judge in his own case. No one ought to be a judge in his own cause.
- Nemo potest esse tenens et dominus – No one can at the same time be a tenant and a landlord (of the same tenement).
- Nemo potest facere per alium, quod per se non potest – No one can do through another what he cannot do himself.
- Nemo potest mutare consilium suum in alterius injuriam – No one can change his purpose to the injury of another.
- Nemobis punitur poreo dem delicto – No one can be punished twice for the same crime or offence.
- Nemopunitur pro alieno delicto – No one is to be punished for the crime or wrong of another.
- Nexus – Connection.
- Nihil quod est inconveniens est licitum – Nothing inconvenient is lawful.
- Nisi – Unless.
- Non compus mentis – Not of sound mind and understanding.
- Non constant – It is not certain.
- Non decipitur qui scit se decipi – He is not deceived who knows that he is deceived.
- Non definitur in jure quid sit conatus – What an attempt is, is not defined in law.
- Non est factum – It is not his deed.
- Non est informatus – He is not informed.
- Non facias malum ut inde veniat bonum – You shall not do evil that good may come of it.
- Non Obstante – Notwithstanding (any statute to the contrary).
- Non sequitur – An inconsistent statement.
- Noscitur a Sociis – The meaning of a doubtful word may be ascertained by reference to the meaning of words associated with it.
- Novation – Transaction in which a new contract is agreed by parties to replace an existing contract.
- Nova Constitutio Futuris Formam Imponere Debet, Non Praeteritis – A new law ought to be prospective and not retrospective, in operation.
- Nullus Commodum Capere Potest De Injuria Sua Propria – No man can take advantage of his own wrong.
